Correct equals for tuples.

js/js.tests/test/org/jetbrains/k2js/test/semantics/TupleTest.java

@@ -36,6 +36,10 @@ public final class TupleTest extends SingleFileTranslationTest {
         fooBoxTest();
     }
 
+    public void testTuplesEquals() throws Exception {
+        fooBoxTest();
+    }
+
 
 }
 

js/js.translator/testFiles/kotlin_lib.js

@@ -23,7 +23,17 @@ var kotlin = {set:function (receiver, key, value) {
     "use strict";
 
     Kotlin.equals = function (obj1, obj2) {
-        if ((obj1 === null)|| (obj1 === undefined)) return obj2 === null;
+        if ((obj1 === null) || (obj1 === undefined)) return obj2 === null;
+        if (obj1 instanceof Array) {
+            if (!(obj2 instanceof Array)) return false;
+            if (obj1.length != obj2.length) return false;
+            for (var i = 0; i < obj1.length; i++) {
+                if (!Kotlin.equals(obj1[i], obj2[i])) {
+                    return false;
+                }
+            }
+            return true;
+        }
         if (typeof obj1 == "object") {
             if (obj1.equals !== undefined) {
                 return obj1.equals(obj2);

js/js.translator/testFiles/tuple/cases/tuplesEquals.kt

@@ -0,0 +1,31 @@
+package foo
+
+class A(val i: Int = 2) {
+    fun equals(other: Any?): Boolean {
+        if (other !is A) {
+            return false
+        }
+        return i % 2 == other.i % 2
+    }
+}
+
+fun box(): Boolean {
+    val c = #(3, 1)
+    if (c != #(3, 1)) {
+        return false
+    }
+    if (c == #(1, 3)) {
+        return false
+    }
+    val b = #(A(2), A(1))
+    if (b != #(A(0), A(3))) {
+        return false
+    }
+    if (b == #(A(2), A(4))) {
+        return false
+    }
+    if (#("aaa") != #("aaa")) {
+        return false
+    }
+    return true
+}